Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 13, 2026 · NIST NVD

   Detected

   Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

2. Oct 14, 2026 · NIST NVD

   Updated

   Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Affected

• cpe microsoft/sharepoint serverversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-102859

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-102859

  30-day exploitation probability 0.4%

  first.org
• NCSC NetherlandsGovernment advisoryCVE-2026-102859

  Microsoft heeft xxx kwetsbaarheden verholpen in diverse Office producten, zoals Word, Excel, Access, Outlook, Visio, Sharepoint en PowerPoint, maar ook subcomponenten als Shell, Azure Key Vault en Click-to-Run. Een kwaadwillende kan de kwetsbaarheden misbruiken om een Denial-of-S

  advisories.ncsc.nl
• NIST NVDVulnerability recordCVE-2026-102859

  Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

  nvd.nist.gov

References

• Patch · msrc.microsoft.com